<%@ page contentType="text/html;charset=UTF-8"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<script type="text/javascript">
<logic:present name="loginnameused">
    alert("登陆名已经被占用");
</logic:present>
<logic:notPresent name="loginnameused">
    alert("此登陆名可用");
</logic:notPresent>
</script>